Happy Jack! Enter the Abyss Expansion

The second bug is during the "Final Battle", when the first heart spawns sometimes the enemies will stop spawning, however it's fixed by simply respawning. Lastly in "Arctic Abyss - Entrance" in the center fight, the enemies have difficulty navigating.

I only found 2 bugs during the entire game. There's an animation glitch in the "Arctic Abyss - Entrance" where if the door leading to the "Arctic Abyss - Castle" is opened from the other side first.